/// <summary>
/// Evaluate a function.
/// </summary>
/// <param name="sourceLineNumbers">The source line information for the function.</param>
/// <param name="prefix">The function prefix.</param>
/// <param name="function">The function name.</param>
/// <param name="args">The arguments for the function.</param>
/// <returns>The function value or null if the function is not defined.</returns>
public string EvaluateFunction(SourceLineNumberCollection sourceLineNumbers, string prefix, string function, string[] args)
{
if (String.IsNullOrEmpty(prefix))
{
throw new ArgumentNullException("prefix");
}
if (String.IsNullOrEmpty(function))
{
throw new ArgumentNullException("function");
}
switch (prefix)
{
case "fun":
switch (function)
{
case "AutoVersion":
// Make sure the base version is specified
if (args.Length == 0 || args[0].Length == 0)
{
throw new WixException(WixErrors.InvalidPreprocessorFunctionAutoVersion(sourceLineNumbers));
}
// Build = days since 1/1/2000; Revision = seconds since midnight / 2
DateTime now = DateTime.Now.ToUniversalTime();
TimeSpan tsBuild = now - new DateTime(2000, 1, 1);
TimeSpan tsRevision = now - new DateTime(now.Year, now.Month, now.Day);
return(String.Format("{0}.{1}.{2}", args[0], (int)tsBuild.TotalDays, (int)(tsRevision.TotalSeconds / 2)));
// Add any core defined functions here
default:
return(null);
}
default:
PreprocessorExtension extension = (PreprocessorExtension)this.extensionsByPrefix[prefix];
if (null != extension)
{
try
{
return(extension.EvaluateFunction(prefix, function, args));
}
catch (Exception e)
{
throw new WixException(WixErrors.PreprocessorExtensionEvaluateFunctionFailed(sourceLineNumbers, prefix, function, String.Join(",", args), e.Message));
}
}
else
{
return(null);
}
}
}
/// <summary>
/// Evaluate a function.
/// </summary>
/// <param name="sourceLineNumbers">The source line information for the function.</param>
/// <param name="prefix">The function prefix.</param>
/// <param name="function">The function name.</param>
/// <param name="args">The arguments for the function.</param>
/// <returns>The function value or null if the function is not defined.</returns>
public string EvaluateFunction(SourceLineNumberCollection sourceLineNumbers, string prefix, string function, string[] args)
{
if (null == prefix)
{
throw new ArgumentNullException("prefix");
}
if (null == function)
{
throw new ArgumentNullException("name");
}
if (0 == function.Length)
{
throw new ArgumentException("Empty function call.", "function");
}
switch (prefix)
{
case "fun":
switch (function)
{
// Add any core defined functions here
default:
return(null);
}
default:
PreprocessorExtension extension = (PreprocessorExtension)this.extensionsByPrefix[prefix];
if (null != extension)
{
try
{
return(extension.EvaluateFunction(prefix, function, args));
}
catch (Exception e)
{
throw new WixException(WixErrors.PreprocessorExtensionEvaluateFunctionFailed(sourceLineNumbers, prefix, function, String.Join(",", args), e.Message));
}
}
else
{
return(null);
}
}
}